OBJECTIVE:To compare the efficacy and safety of terlipatide and bisphosphate in the treatment of postmenopausal osteoporosis fractures through a Meta-analysis. METHODS:By searching PubMed,Cochrane Library,EMbase,CNKI,WanFang and VIP databases,18 randomized controlled studies on terlipatide and bisphosphate in the treatment of postmenopausal osteoporosis fractures were included according to inclusion and exclusion criteria.Endnote X9 software was used to manage the literature and Revman 5.3 software was used to perform a Meta-analysis on the extracted data.The incidences of vertebral fracture,non-vertebral fracture and adverse reaction in postmenopausal osteoporosis patients treated with terlipatide and bisphosphate were analyzed. RESULTS:A total of 18 randomized controlled studies were included,of which 10 were of medium and high quality and 8 were of low quality.Meta-analysis results showed that the fracture incidence in the teriparatide group[risk ratio(RR)=0.56,95%confidence interval(CI):0.48-0.66,P＜0.000 01]was lower than that in the bisphosphonate group,and teriparatide was superior to alendronate in preventing fractures in postmenopausal women with osteoporosis(RR=0.50,95%CI:0.35-0.69,P＜0.000 1)and other bisphosphonates(RR=0.58,95%CI:0.49-0.70,P＜0.000 01).During the follow-up over 18 months,teriparatide was superior to bisphosphonates in preventing fractures in postmenopausal women with osteoporosis(RR=0.56,95%CI:0.48-0.69,P＜0.000 01).In addition,we found that teriparatide was superior to bisphosphonates in preventing vertebral fractures(RR=0.48,95%CI:0.37-0.62,P＜0.000 01)and non-vertebral fractures(RR=0.63,95%CI:0.51-0.78,P＜0.000 1)in postmenopausal women with osteoporosis.Teriparatide was superior to bisphosphonates in increasing lumbar bone density[odds ratio=4.16,95%CI:2.96-5.36,P＜0.000 1)and femoral neck bone density(odds ratio=1.02,95%CI:0.04-2.01,P=0.04).There was no significant difference in adverse reactions between teriparatide and bisphosphonates(RR=0.95,95%CI:0.85,1.06,P=0.37). CONCLUSION:Teriparatide is superior to bisphosphonates in preventing vertebral and non-vertebral fractures in postmenopausal women with osteoporosis,but the safety and adverse drug reactions of teriparatide and bisphosphonates are basically similar.Teriparatide is superior to bisphosphonate in preventing fracture and improving lumbar and femoral neck bone density regardless of short-term(＜18 months)or long-term(≥18 months)use.

BACKGROUND:Patients with severe lumbar degenerative disease may have their bone mineral density incorrectly raised by dual-energy X-ray absorptiometry.While lumbar cancellous bone Hounsfield unit value can assist dual-energy X-ray absorptiometry in reducing osteoporosis misdiagnosis. OBJECTIVE:To identify osteoporosis in woman patients with lumbar degenerative diseases using lumbar CT scans. METHODS:Bone mineral density test results and lumbar CT data of 192 women patients who were treated at the Department of Spine Surgery,Sixth Affiliated Hospital of Xinjiang Medical University were retrospectively reviewed.All patients were divided into a degeneration group(n=107)and a control group(n=85)according to the criteria of severity of vertebral degeneration as assessed on CT of the lumbar spine.The CT value of axial cancellous bone of L1 vertebral body was measured in the two groups.The T score and bone mineral density of the hip and L2-L4 were recorded.According to previously published studies,osteoporosis was diagnosed at L1 vertebral CT values≤110.The prevalence of osteoporosis diagnosed by dual-energy X-ray absorptiometry and CT values was compared between the two groups. RESULTS AND CONCLUSION:(1)CT values were significantly and positively correlated with T scores and mean bone mineral density of the L2-L4 vertebrae in both groups(P<0.001),while the correlation was higher in the control group.(2)Lumbar T scores and bone mineral density values were significantly higher in the degeneration group than those in the control group(P<0.05)and CT values were significantly lower in the degeneration group than that in the control group(P = 0.001).Hip T scores and bone mineral density were not significantly different in the two groups.(3)The prevalence of osteoporosis diagnosed by CT thresholds was higher in all patients than that diagnosed by T values(51.0%and 42.7%).(4)The prevalence of osteoporosis diagnosed by CT values was as high as 23.6%in the 110 patients diagnosed with non-osteoporosis by dual energy X-ray absorptiometry in both groups,and was higher in the degeneration group than that in the control group(31.7%and 14.0%,respectively).(5)The prevalence of missed osteoporosis was as high as 38.6%(27/70)of non-osteoporosis patients diagnosed by dual-energy X-ray absorptiometry of the lumbar spine in the degeneration group compared to 19.6%(11/56)in the control group.(6)It is concluded that osteoporosis is common in female patients with lumbar degenerative diseases aged≥50 years.Measurement of lumbar cancellous bone CT values may be a useful complementary method for diagnosing osteoporosis in patients with lumbar degenerative diseases,especially in patients with severe degenerative lumbar degenerative diseases where more missed osteoporosis patients can be identified.

BACKGROUND:Studies have exhibited that symmetrical distribution and effective dose of bone cement can reduce postoperative vertebral refractures and help improve outcomes,but obtaining better distribution and dose of bone cement during percutaneous vertebroplasty remains an issue for surgeons. OBJECTIVE:To investigate the risk factors of percutaneous vertebroplasty in the treatment of osteoporotic vertebral compression fracture,and to analyze the correlation between these factors and recurrent fractures of the operative vertebral body and adjacent vertebral bodies after percutaneous vertebroplasty. METHODS:111 patients who underwent unilateral approach percutaneous vertebroplasty in Sixth Affiliated Hospital of Xinjiang Medical University from January 2018 to December 2021 were screened and divided into fracture group(n=17)and non-fracture group(n=94)according to whether refracture was observed during follow-up.The following variables were reviewed in both groups:Gender,age,body mass index,operation time,menopause age,bone cement distribution index,bone density T value,bone cement dose,location of bone cement distribution,percutaneous vertebroplasty stage,past history,adverse reactions and disc cement leakage of patients.These variables were analyzed by univariate analysis.The statistically significant factors were replaced by a binary Logistic regression model to analyze the correlation with vertebral refracture after percutaneous vertebroplasty. RESULTS AND CONCLUSION:(1)Univariate analysis demonstrated that after percutaneous vertebroplasty,vertebral refracture was associated with disc cement leakage(P=0.000),cement dose(P=0.049),and cement distribution location(P=0.017).(2)Binary Logistic regression revealed that bone cement leakage(P=0.000),cement dose(P=0.031),and location of cement distribution(P=0.015)were risk factors for recurrent fracture of the operative vertebral body and adjacent vertebral body after percutaneous vertebroplasty.Compared with cement distribution types I,II,and III,the risk of recurrent fracture in the operative and adjacent vertebrae was higher in cement distribution types IV and V(OR=36.340,P=0.016;OR=27.755,P=0.017).(3)It is concluded that recurrent fractures of the surgically operated vertebral body and adjacent vertebral bodies are caused by the interaction of multiple risk factors.Bone cement distribution and bone cement leakage were independent risk factors.Recurrent fractures of the operative vertebra and adjacent vertebrae are more likely when the cement is distributed in type IV and type V.Surgeons should fully assess these risk factors before surgery and develop targeted prevention and treatment strategies to help reduce the risk of future refractures.